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Stock Option And Stock Award Plans (Summary Of Stock Options Outstanding) (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Number of Options |  |  |
Number of Options, Outstanding, Beginning Balance | 3,108,741 | 3,125,944 | 2,827,438
Number of Options, Granted |  |  | 388,822
Number of Options, Forfeited and Expired | (89,408) | (17,203) | (22,611)
Number of Options, Exercised |  |  | (67,705)
Number of Options, Outstanding, Ending Balance | 3,019,333 | 3,108,741 | 3,125,944
Weighted Average |  |  |
Weighted Average Option Exercise Price/Share, Outstanding, Beginning Balance | $ 13.81 | $ 13.82 | $ 13.55
Weighted Average Option Exercise Price/Share, Granted |  |  | 16.37
Weighted Average Option Exercise Price/Share, Forfeited and Expired | 19.60 | 15.33 | 18.14
Weighted Average Option Exercise Price/Share, Exercised |  |  | 13.51
Weighted Average Option Exercise Price/Share, Outstanding, Ending Balance | 13.64 | 13.81 | 13.82
Minimum |  |  |
Option Exercise Price/Share Range |  |  |
Exercise Price, Outstanding, Beginning Balance | 10.75 | 10.75 | 10.75
Exercise Price, Granted |  |  | 16.37
Exercise Price, Forfeited and Expired | 13.78 | 14.47 | 14.47
Exercise Price, Exercised |  |  | 10.75
Exercise Price, Outstanding, Ending Balance | 10.75 | 10.75 | 10.75
Maximum |  |  |
Option Exercise Price/Share Range |  |  |
Exercise Price, Outstanding, Beginning Balance | 22.49 | 22.49 | 22.49
Exercise Price, Granted |  |  | 16.37
Exercise Price, Forfeited and Expired | 19.64 | 19.64 | 19.64
Exercise Price, Exercised |  |  | 17.29
Exercise Price, Outstanding, Ending Balance | $ 22.49 | $ 22.49 | $ 22.49

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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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